Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Daniel A Rey, MD

Individual provider Critical Care Medicine (Internal Medicine) Physician · NPI 1336288356

Dr. Daniel A Rey, MD practises Internal Medicine in Saint Louis, Missouri. Graduated from University of South Florida College of Medicine in 1987, 39 years ago. Practices with Mercy Clinic East Communities, a 573-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
39
Trained at
University of South Florida College of Medicine
Licensed in
MO
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

615 S New Ballas Rd J F K Health Ctr
Saint Louis, MO 63141-8221 Not confirmed with CMS for 14 years — call before visiting
Phone: (314) 251-4283
Fax: (314) 251-7247
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Critical Care Medicine (Internal Medicine) Physician (primary) Taxonomy 207RC0200X · Licence R9J16 (MO)

Record details

NPI number1336288356
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 6, 2007
Last updated in NPPESFebruary 7, 2012

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF SOUTH FLORIDA COLLEGE OF MEDICINE
Graduated 1987 (39 years in practice)
Group practice Mercy Clinic East Communities — 573 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients29
Services billed 31 a service is one billed item, such as a visit, a test or a procedure
Average patient age68

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Mercy Hospital St Louis Hospital · Saint Louis, MO · listed as Mercy Hospitals East Communities Mercy Hospital St Louis

Colleagues at Mercy Clinic East Communities

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 573 clinicians in the practice; 12 are shown here.

Other providers in Saint Louis